Okay? And what have tried?

Which has already been covered. Did you read the thread or just knee jerk reply without bothering to find out what has gone before?

Well, where is your attempt at it?

Well, put it into a Class and try it out. Do the instructions say you actually need to do anything other than make it compilable (and remain functional, of course).

As a comment on your signature, many military elements, in many countries around the world, have played around with weather control, and China is actually actively attempting to manipulate the...